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Zenith biography, Zenith discography
For other uses, see Zenith (disambiguation).Diagram showing the relationship between the Zenith, the Nadir, and different types of Horizon.Note that the Zenith is opposite the Nadir.In broad terms, the zenith is the direction pointing directly above a particular location (perpendicular, orthogonal).Since the concept of being above is itself somewhat vague, scientists define the zenith in more rigorous terms.For reference, the vertical direction at the given location and pointing in the same sense as the gravitational force is called the nadir.Zenith is the opposite of nadir.Zenith is also used for the highest point reached by a celestial body during its apparent orbit around a given point of observation.Often used in this sense about the Sun, it only corresponds to the first concept of zenith for one latitude at a time, and never at all for latitudes outside the tropics.Relevance and use
The zenith is used in the following scientific contexts:
It serves as the direction of reference for measuring the zenith angle, which is the angular distance between a direction of interest (e.It defines one of the axes of the horizontal coordinate system in astronomy.Discussion
The zenith directions corresponding to three different locations (not on the same vertical direction) are divergent.Strictly speaking, the zenith is only approximatively contained in the local meridian plane because the latter is defined in terms of the rotational characteristics of the celestial body, not in terms of its gravitational field.Only between the tropics is it possible for the Sun to be at the zenith.All text is available under the terms of the GNU Free Documentation License.Zenith Electronics Corporation is a former American manufacturer of televisions headquartered in Lincolnshire, Illinois.It was the inventor of the modern remote control, and it introduced HDTV in North America.Zenith is now a member of the South Korean conglomerate LG Group by way of LG Electronics, which acquired a controlling share of Zenith in 1995 and the rest in 1999.The company began in Chicago, Illinois, in 1918 as a small producer of amateur radio equipment.Zenith was also one of the first companies to introduce a digital HDTV system implementation, parts of which were included in the ATSC standard starting with the 1993 Grand Alliance.In the 1980s, Zenith fell on hard times as more and more of their market share went to Japanese sets with lower prices.Zenith renamed Heath's computer division Zenith Data Systems, and eventually sold ZDS and Heath to Groupe Bull in 1989 to raise money for its HDTV research efforts.Zenith changed its name to Zenith Electronics Corporation in 1984, to reflect its interests in computers and CATV, and since it had left the radio business two years earlier.By 1990, Zenith was in trouble, and looking more and more attractive to a hostile takeover.HDTV in the US years away, Zenith's prospects were dim.Zenith eventually filed for bankruptcy in 1999, and in exchange for its debts, LG offered to buy the part of Zenith it didn't already own.During this era, some of Zenith's products were being OEMed under the Admiral name.ATSC digital TV converter box.LG also offers some Zenith branded plasma, LCD, and direct view televisions through selected retail outlets.Their experiment involved a descrambler box mounted on the TV set, and plugged into the telephone lead.When a preannounced broadcast was ready to begin, viewers would call an operator at Zenith who would send a signal with the telephone leads to unscramble the signal.While the Theatre Owners of America claimed the concept was a flop, Zenith itself claimed the experiment was a success.In spite of the fact that the three films initially available to the first 300 test households were more than two years old, about 18 percent of Phonevision viewers had seen them at the movies, and 92 percent of Phonevision households reported that they would prefer to see films at home.The remote control
Zenith is, perhaps, best known for the first practical wireless TV remote control, the Space Command, developed in 1956.Zenith Space Commander 600 remote control.The original TV remote control was a wired version, released in 1950, that soon attracted complaints about an unsightly length of cable from the viewer's chair to the TV set.Lead Engineer Robert Adler then suggested that ultrasonic sound be used as a trigger mechanism.TV responded to the different frequencies this action produced.Space phone
Some models of Zenith's System 3 line of televisions made from the late 70s to the mid 80s had a feature referred to by Zenith as the Space Phone.Zoom
A feature that was included in some of Zenith's Chromacolor and later System 3 lines of sets from the late 70s was the zoom feature.The Porthole TV
In the very early 1950s Zenith entered the television market.The main feature was that the entire round screen was exposed.While circuit boards save time and errors in assembly, they are not well suited for use in tube equipment, in which high temperatures are generated that can break down boards, eventually leading the boards to crumble if one attempts to remove a tube.Zenith, and to a lesser extent Motorola, avoided this problem by continuing to use hand wired chassis in all their tube equipment.Zenith kept circuit boards out of their televisions until the Chromacolor line in the early 1970s, and even then only used them with solid state components, mounting the four tubes used in the Chromacolor "4 tube hybrid" on the steel chassis.All text is available under the terms of the GNU Free Documentation License.Zenith, TheZenith, The Partnership Pays Off, Risky Robots, First Call
and Results Are No Accident are registered U."Please select state or branch.""See a map of synonyms of zenith in the Visual Thesaurus."Zenith Infotech is an international company serving IT Service Providers worldwide.Managed Service Infrastructure and a Business Continuity Solution.Network Operations Center(NOC) in Mumbai, India with over 600 technicians supplies partners the essentials to deliver complimentary, scalable offerings, without adding layers of overhead.Simply put Zenith's mission is to help IT Service Providers grow their business without increasing their overhead.Zenith Infotech proudly presents to you MSPTV.Zenith Infotech's products and services through our online broadcasting.Come see us at the 2006 National Plastics Expo.America's largest third party employee benefit program administrator.Ar samt road, incorrectly read as senit by medieval scribes (cf.Managed services the right way now.The point on the celestial sphere that is directly above the observer.The upper region of the sky.The highest point above the observer's horizon attained by a celestial body.Published by Houghton Mifflin Company.Zenith, GA (CCD, FIPS 07993480)Location: (32.Population (2000): 8,865 (3,366 housing units)Area: 175.From morn To noon he fell, from noon to dewy eve, A summer's day; and with the setting sun Dropped from the zenith, like a falling star.This dead of midnight is the noon of thought, And wisdom mounts her zenith with the stars.It was during those civil troubles .Zenith telescope (Geodesy), a telescope specially designed for determining the latitude by means of any two stars which pass the meridian about the same time, and at nearly equal distances from the zenith, but on opposite sides of it.It turns both on a vertical and a horizontal axis, is provided with a graduated vertical semicircle, and a level for setting it to a given zenith distance, and with a micrometer for measuring the difference of the zenith distances of the two stars.Managed services the right way now.Search multiple engines at once for zenith
webcrawler.Accessories, Toll Free Help and Easy Returns.The answers are right on your browser and just a click away with Dictionary.
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